There are total 5 hours or 300 minutes from 4pm to 9pm. In words, this duration is equal to five hours or three hundred minutes.
How many hours from
| 1AM to 12AM | 8AM to 10AM | 4AM to 2AM |
| 5AM to 1AM | 1AM to 4PM | 12AM to 8AM |
| 10PM to 9PM | 5PM to 2AM | 9PM to 7PM |
| 5PM to 2AM | 10AM to 1AM | 5AM to 8AM |
| 6PM to 7AM | 7AM to 3PM | 5PM to 12PM |
| 1AM to 10AM | 3AM to 5PM | 5PM to 11PM |
